Adjustable locking and sealing device for use on scales



Nov. 6 1923.

J.- Jv MAGRADY ADJUSTABLE LOCKING AND SEALING DEVICE FOR USE ON SCALESINVENTOR.

Patented Nov. 6, 1923.

UNITED STATES JOSEPH J. MAGRAIDY, or crrrceeo, ILLINOIS.

ADJUSTABLE LOCKING AND SEALING DEVICE FOR USE ON SCALES,

Application filedJuly 12,

T 0 all to 720m it may COnCGWL Be it known that I, J osnrn J. MAGRADY, acitizen of the United States of America, residing at Chicago, in thecounty of Cook and State of Illinois, have invented certain new anduseful Improvements in Adjustable Locking and-Sealing Devices "for Useon Scales, of which the following is a specification.

My present invention relates generally to scales and more particularlyto what are commonly known asplatform scales operating through a seriesof levers located below the platform and commonly adjusted in anuncertain haphazard manner by methods which are open to the manipulationof any one, skilled or unskilled, honest or otherwise, and my object isthe provision of means whereby certain definite and accurate adjustmentsmay be quickly and easily made and wherein the adjustable parts whenproperly positioned may be locked against unwarranted tampering andsealed in place.

More especially my invention aims to simplify the adjustment of platformscale levers, promote accuracy and speed of adjustment and insureuniformly accurate operation as well as avoiding unwarranted tamperingand adjustment.

My invention is shown in the accompany ing drawing which forms a part ofthis specification, and in which, 1

Figure 1 is a side' elevation of a scale pit lever showing myimprovements applied thereto and sealed,

Figure 2 is an end view of the scale pit lever,

Figure 3 is a side view, partly in elevation and partly in verticallongitudinal section showing my improvements applied as in Figure 1, i a

Figure 4 is an end view of the complete device, and

Figure 5 is a detail face view of the adjusting wheel.

Referring now to these figures, I have shown at 10 a lever which may beone of the main pit levers or the central cross lever of platformscales, provided at one end with a nose iron 11 commonly adjusted bydriving the same lengthwise of the lever and securing the same inadjusted position by set screws and the like to vary the effectivelength of the lever and in this way cure light or heavy weighing.

The usual method of adjustment is not 1922. Serial No. 574,500.

end of an outstanding adjusting rod 17 threaded throughout its lengthwhose inner end extends through the lug opening 15 and is locked by nuts18 abutting opposite sides of the lug and threaded on the rod. The outerportion of the rod 17 extends loosely through the openings 14 of theears 14 and receives an adjusting wheel 19 threaded thereon and disposedbetween the ears 14 by which it is confined against lengthwisedisplacement with respect to the nose iron 11.

Thus by rotating the wheel 19 it is obvious the nose iron 11 may beaccurately, quickly and easily adjusted on the lever extension 13. Theadjusting wheel has an annular series of apertures 20 as will be seen inFigure 5, while as seen in Figures 2 and 4, the depending ears 14 of thenose iron 11 have laterally spaced apertures 14", for the reception ofthe parallel extensions of a sealing wire 21 which when threaded throughcertain alined apertures 20 of the adjusting wheel, may have its freeends securely connected by a lead seal 22 as in Figure 1, thus sealingthe adjustable parts in adjusted position against tampering withoutbreaking the seal.

I claim:

1. scale lever having a nose iron adjustable thereon and also having anadjusting rod, and an adjusting wheel threaded on said means engageablewith said Wheel and a portion of the nose llOIl for looking the Wheelagalnst movement.

4:. A scale lever, an adqustable nose llOIl 5 thereon, and normallysealed means for adjusting the nose iron on the lever, including anadjusting member carried by the nose iron and a sealing memberengageabie with i the said adjusting member and with the nose iron. 10

In testimony whereof I have affixed my signature.

JOSEPH J. MAGRADY.

